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[Kamal Mostafa <kamal@xxxxxxxxxxxxx>]

** Changed in: linux (Ubuntu)
       Status: Confirmed => In Progress

** Changed in: linux (Ubuntu)
     Assignee: (unassigned) => Kamal Mostafa (kamalmostafa)

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https://bugs.launchpad.net/bugs/1158668

Title:
  Build cpupower from kernel tools

Status in “linux” package in Ubuntu:
  In Progress

Bug description:
  Ubuntu supplies the cpufrequtils package, which has been rendered
  obsolete by cpupower. It is included in the kernel source as of
  linux-3.1 [2], located at tools/power/cpupower/.

  I don't think that it is explicitly tied to a particular kernel
  version, so it may be best built separately from the kernel packages.
  There is no consensus among other distributions: Fedora includes it in
  their kernel-tools package; SuSE and RHEL pull from the git repo and
  build as a separate cpupower or cpupowerutils package (similar to how
  cpufrequtils was done); Arch takes it from the kernel source and
  builds it along with other tools into separate packages.

  cpupower provides a number of things that cpufrequtils does not, and
  is invaluable in a server environment for tuning of power management.
  Of particular note is the ability to set perf_bias on Intel
  processors; I am not aware of another tool that can do this. It is
  also the focus of power utility development, and should be available
  on Ubuntu systems.

  [1] http://lwn.net/Articles/433002/
  [2] http://kernelnewbies.org/Linux_3.1#head-92f86d42a205e6c53d4bf6912a0dfa755f4c01f6

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